EXPR/EX_Matrix.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * Produced by:
 *      Robert Pringle & Mark Elendt
 *      Side Effects Software Inc
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        EX_Matrix.C ( EXPR Library, C++)
 *
 * COMMENTS:
 */

#ifndef __EX_Matrix_h__
#define __EX_Matrix_h__

#include "EXPR_API.h"
class UT_Matrix3;
class UT_Matrix4;
class UT_DMatrix3;
class UT_DMatrix4;
class ev_Vector;

//
// Class definition for array data types
//

class EXPR_API ev_Matrix {
public:
     ev_Matrix(int rows=1, int cols=1);
     ev_Matrix(const ev_Matrix &src);
    ~ev_Matrix();

    int          getRows() const                { return myRowCount; }
    int          getCols() const                { return myColCount; }
    float        getValue(int r, int c) const;
    float        fastGet(int r, int c) const    { return myRowVals[r][c]; }
    void         setValue(int r, int c, float val);

    void         copy(const ev_Matrix &src);
    void         add(const ev_Matrix &src);
    void         sub(const ev_Matrix &src);
    void         times(float scalar);
    void         times(const ev_Matrix &src);

    int          castFrom(const char *str);
    int          castFrom(float val);
    int          castFrom(const ev_Vector &from);
    int          castTo(ev_Vector &to) const;
    int          castToFloat(float &rval) const;
    char        *castToString() const;

    void         getMatrix3(UT_Matrix3 &v, int overwrite=1) const;
    void         getMatrix4(UT_Matrix4 &v, int overwrite=1) const;
    void         setMatrix3(const UT_Matrix3 &v);
    void         setMatrix4(const UT_Matrix4 &v);
    void         setMatrix3(const UT_DMatrix3 &v);
    void         setMatrix4(const UT_DMatrix4 &v);

    void         identity(int size);

    // Returns 1 if it's a valid matrix string
    int          scan(const char *str);

    float        operator()(int r, int c) const { return getValue(r, c); }
    void         grow(int rows, int cols)
                 {
                     if (rows != myRowCount) setRows(rows);
                     if (cols != myColCount) setCols(cols);
                 }
    void         setRows(int rows);
    void         setCols(int cols);

private:
    int           myRowCount, myColCount;
    float       **myRowVals;
};

#endif

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